Meg: Mom, can I turn the heat up?
Lois: Don't touch the thermostat, Meg. Your father gets upset.
Meg: Come on. This thing goes up to 90.
[Meg adjusts it a little, and Peter suddenly comes into the room]
Peter: Who touched the thermostat?
Meg: God, how does he always know?
Peter: Brain implant, Meg. Every father's got one. Tells you when the kids mess with the dial.
Guy: My thing went off! Your thermostat okay?